Surly

Singleator, Black (CH8899)

Surly Singleator mounts right up to your derailleur hanger and provides a simple, effective, and adjustable means of tensioning the excess chain slack found in vertical dropout single-speed drivetrains.

Fully-adjustable chain line

Stainless steel pivot bushing

Triple-sealed spring, large cog capacity and chain guides

Do not use with a coaster brake, fixed gear, multi-cog or multi ring drivetrains